点击次数：

论文类型：期刊论文

发表时间：2016-01-01

发表刊物：RSC ADVANCES

收录刊物：SCIE、EI

卷号：6

期号：74

页面范围：70704-70714

ISSN号：2046-2069

摘要：In the present study, we developed a novel approach to introduce amino group (-NH2), hydroxyl group (-OH) and sulfhydryl group (-SH) onto carbon fibers (CFs) using aromatic diazonium salts. Fourier transform infrared spectroscopy, Raman spectra, X-ray photoelectron spectroscopy, scanning electron microscope and single fiber tensile testing were performed to characterize the functional CFs. Interlaminar shear strength (ILSS) and flexural strength were carried out to investigate the interfacial properties of CFs/PPBES composites. Experimental results showed that -NH2, -OH and -SH were grafted on the CFs surface and increase the fibers surface roughness. The functionalization did not lead to any discernable decrease in the fibers tensile strength. It was obvious that ILSS and flexural strength were enhanced. Dynamic mechanical analysis and hydrothermal aging tests revealed that CF-NH2/PPBES had excellent high temperature mechanical properties and hydrothermal aging resistance. Additionally, the reinforcing mechanisms were also analyzed.